A mortgage in principle, also known as an MIP, agreement in principle, approval in principle, decision in principle, or AIP is a written document composed as an indication of how much money a prospective buyer will be able to borrow when purchasing a house.
MIPs are most commonly provided by banks and lenders, but may also be provided by some mortgage brokers. In order to determine a buyer’s borrowing potential, a MIP provider will usually work to compile a basic overview of their financial circumstances – ultimately arriving at the maximum figure they would theoretically be willing to provide.
This document, though more of an informed guideline than a guarantee, can help hugely in the process of searching for and securing a new home – helping establish an accurate budget, guide your decisions, and, most importantly, prove to your estate agent or seller that you’re a serious buyer.